Kinetic Energy of a Baseball at 40 m/s

A 0.145 kg baseball pitched at 40 m/s (~90 mph) carries approximately 116 J of kinetic energy.

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How to use this tool

Enter mass and speed in the fields above.
Results update instantly as you type — or click Calculate.
Read your kinetic energy and the full breakdown beneath it.

A major-league fastball at ~90 mph carries substantial kinetic energy — calculate it here.

Frequently asked questions

Why does speed have a larger effect than mass?: Because speed is squared. Doubling mass doubles KE; doubling speed quadruples it.
How do I convert km/h to m/s?: Divide by 3.6. For example, 90 km/h = 25 m/s.